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A Gröbner Basis Method for Modules over Rings of Differential Operators

✍ Scribed by Toshinori Oaku; Takeshi Shimoyama


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
683 KB
Volume
18
Category
Article
ISSN
0747-7171

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✦ Synopsis


We study modules over the ring (\mathcal{D}{0}) of differential operators with power series coeffcients. For (\mathcal{D}{0})-modules, we introduce a new notion of (F)-Gröbner basis and present an algorithmic method to compute it. Our method is more algebraic than that of Castro ((1986,1987)) which is based on the Weierstrass-Hironaka division theorem. The essential point of our methad consists in using a filtration of (\mathcal{D}{0}) introduced by Kashiwara (1983). This enables us to extend some of the algorithmic methods for rings of power series to (\mathcal{D}{0})-modules. As applications, we can compute, in some cases, the cliaracteristic variety, and the dimension of the space of solutions, of a system of lincar partial differential equations via (F)-Gröbner bases. The relation to previously known methods is also stated.


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